Reading Ouput Port State

hey guy
I need your help
I want to reading Port output. I can not find this topic in other forum.
example:

PORTD is the register for the state of the outputs:

PORTD = B10101000; // sets digital pins 7,5,3 HIGH

if i don't know current state of it and i want read Port state:

Reading PORTD = B????????
please help me
thank you so much

byte reading = PORTD;

https://www.arduino.cc/en/Reference/PortManipulation

pipi5cdt:
hey guy
I need your help
I want to reading Port output. I can not find this topic in other forum.
example:

PORTD is the register for the state of the outputs:

PORTD = B10101000; // sets digital pins 7,5,3 HIGH

if i don't know current state of it and i want read Port state:

Reading PORTD = B????????
please help me
thank you so much

Thank you Delta_G
I will Try